Breeze power generation device applied to sewage treatment plant

Abstract

The invention belongs to the technical field of breeze power generation devices, particularly relates to a breeze power generation device applied to a sewage treatment plant, and aims to solve the problem that the energy utilization efficiency is reduced due to the fact that an existing breeze power generation device is inconvenient to fully utilize breeze areas such as a ventilation pipeline and a tail gas exhaust port of the sewage treatment plant. The device comprises a mounting circular plate; the fixing cylinder is fixedly mounted on one side of the mounting circular plate, vent holes are formed in the mounting circular plate, and a storage battery is fixedly mounted at the bottom of the fixing cylinder; the number of the first sliding grooves is two, the two first sliding grooves are formed in one side of the mounting circular plate, positioning mechanisms are arranged in the two first sliding grooves, and the positioning mechanisms are used for fixedly mounting the mounting circular plate; in the using process, breeze areas such as a ventilation pipeline and a tail gas exhaust port of a sewage treatment plant can be fully utilized conveniently, so that the energy utilization efficiency is effectively improved, the structure is simple, and use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of gentle breeze power generation devices, and more particularly to a gentle breeze power generation device applied to a sewage treatment plant. Background Art

[0002] During the operation of a sewage treatment plant, a large amount of electric energy is consumed. In the prior art, the energy recovery of sewage treatment plants mainly focuses on biogas power generation, micro hydropower generation of tail water, etc. In recent years, some sewage treatment plants have begun to attempt to utilize photovoltaic power generation and wind power generation technologies. However, traditional wind power generation devices usually require relatively high wind speeds to operate effectively, and have a large floor area, making it difficult to adapt to the special environment of sewage treatment plants. A gentle breeze power generation device is a small wind power generation device specifically designed to capture wind energy and convert it into electrical energy in a low wind speed environment (usually referring to wind speeds of 2-5 m / s or even lower).

[0003] In the prior art, it is not convenient to make full use of gentle breeze areas such as ventilation ducts and tail gas discharge ports in sewage treatment plants, resulting in reduced energy utilization efficiency. Therefore, we propose a gentle breeze power generation device applied to a sewage treatment plant to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawback in the prior art that the gentle breeze power generation device is not convenient to make full use of gentle breeze areas such as ventilation ducts and tail gas discharge ports in sewage treatment plants, resulting in reduced energy utilization efficiency, and to propose a gentle breeze power generation device applied to a sewage treatment plant.

[0005] The gentle breeze power generation device applied to a sewage treatment plant provided by the present application adopts the following technical solution:

[0006] A gentle breeze power generation device applied to a sewage treatment plant, comprising:

[0007] An installation round plate;

[0008] A fixed cylinder, the fixed cylinder is fixedly installed on one side of the installation round plate, a ventilation hole is opened on the installation round plate, and a storage battery is fixedly installed at the bottom of the fixed cylinder;

[0009] Two first chutes, the two first chutes are opened on one side of the installation round plate, and a positioning mechanism is arranged in the two first chutes for fixedly installing the installation round plate;

[0010] A second chute, the second chute is opened at the top of the fixed cylinder, a sliding seat is slidably installed in the second chute, a first through groove is opened in the sliding seat, a transmission rod is rotatably installed at the bottom of the sliding seat, a plurality of blades are fixedly installed on the outer side of the transmission rod, and a lubrication mechanism is arranged in the first through groove for adding lubricating oil to the transmission rod;

[0011] The fixed rod is fixedly installed inside the fixed cylinder. A second through groove is formed on the fixed rod, and a dust-proof net is fixedly installed inside the fixed cylinder.

[0012] Furthermore, a generator is fixedly installed on the top of the sliding seat. The output shaft of the generator is fixedly connected to a small gear. The small gear meshes with a large gear, and the large gear is fixedly connected to one end of the transmission rod. When the transmission rod rotates, the large gear drives the small gear to rotate.

[0013] Furthermore, a first through hole is formed on the inner wall of one side of the third through groove. A threaded rod is rotatably installed inside the first through hole. The threaded rod is in threaded connection with the sliding seat, and one end of the threaded rod is fixedly connected to a second bevel gear. When the second bevel gear rotates, the threaded rod drives the sliding seat to move horizontally.

[0014] Furthermore, the lubrication mechanism includes an oil barrel, which is fixedly installed on the top of the sliding seat. A first connecting pipe is slidably installed on the top of the oil barrel. The oil barrel and the sliding seat are fixedly installed with the same second connecting pipe, and one end of the second connecting pipe is located inside the first through groove.

[0015] Furthermore, a vertical rod is fixedly installed on the top of the fixed cylinder. A connecting plate is slidably installed on the vertical rod. A third sliding groove is formed on the bottom of the connecting plate. A slider is slidably installed inside the third sliding groove. A guiding rod is slidably installed on the slider, and both ends of the guiding rod are fixedly connected to the inner walls of both sides of the third sliding groove. One end of the first connecting pipe is fixedly connected to the slider. When the slider moves horizontally, the guiding rod can play a role in stabilizing the horizontal movement of the slider.

[0016] Furthermore, a sliding rod is slidably installed on the fixed cylinder. A cam is fixedly installed on the outer side of the transmission shaft. The cam cooperates with the sliding rod. One end of the sliding rod is fixedly connected to the bottom of the connecting plate. A fixed block is fixedly installed on the outer side of the sliding rod. A return spring is sleeved on the outer side of the sliding rod, and both ends of the return spring are fixedly connected to the outer side of the fixed block and the outer side of the fixed cylinder respectively. When the cam rotates, the cam drives the sliding rod to move vertically.

[0017] Furthermore, the first connecting pipe is slidably installed inside the second connecting pipe. A first oil outlet hole and a second oil outlet hole are respectively formed on the first connecting pipe and the second connecting pipe, and the first oil outlet hole and the second oil outlet hole cooperate with each other.

[0018] Furthermore, a second motor is fixedly installed on the inner wall of one side of the second through groove. A second through hole is formed on the inner wall of one side of the second through groove. A transmission shaft is rotatably installed inside the second through hole. One end of the transmission shaft is fixedly connected to the output shaft of the second motor, and the other end of the transmission shaft is fixedly connected to a brush plate. The brush plate cooperates with the dust-proof net. When the second motor is turned on, the transmission shaft drives the brush plate to rotate.

[0019] Further, a third through groove is provided on the fixed cylinder, a first motor is fixedly installed at the top of the fixed cylinder, a first bevel gear is fixedly installed on the output shaft of the first motor, the first bevel gear meshes with a second bevel gear, and when the first motor is turned on, the first bevel gear drives the second bevel gear to rotate.

[0020] Further, the positioning mechanism includes two movable rods, the two movable rods are respectively slidably installed in the two first chutes, arc-shaped clamping plates are fixedly installed on the outer sides of the two movable rods, a bidirectional lead screw is rotatably installed on the installation circular plate, the bidirectional lead screw is threadedly connected with the two arc-shaped clamping plates, and one end of the bidirectional lead screw is fixedly connected with a hand wheel. When the hand wheel is rotated, the bidirectional lead screw drives the two movable rods to move vertically.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. In this solution, the installation circular plate is installed at the ventilation duct and the tail gas discharge port of the sewage treatment plant. Rotate the hand wheel, the hand wheel drives the bidirectional lead screw to rotate, the bidirectional lead screw drives the two movable rods to approach each other, the two movable rods respectively drive the two arc-shaped clamping plates to approach each other, and thus the two arc-shaped clamping plates can clamp the ventilation duct or the tail gas discharge port, and then fixedly install the installation circular plate;

[0023] 2. In this solution, when the ventilation duct or the tail gas discharge port ventilates or discharges, air passes through the ventilation holes and the fixed cylinder, thereby driving a plurality of blades to rotate. The plurality of blades drive the transmission rod to rotate, the transmission rod drives the large gear to rotate, the large gear drives the small gear to rotate, and the small gear drives the generator to operate, so as to achieve the purpose of capturing wind energy and converting it into electric energy;

[0024] 3. In this solution, by turning on the first motor, the first motor drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the threaded rod to rotate, and the threaded rod drives the slide seat to move horizontally, so that a plurality of blades can be moved outside the fixed cylinder, and thus can continue to capture wind energy and convert it into electric energy.

[0025] The present invention can make full use of the gentle breeze areas such as the ventilation ducts and the tail gas discharge ports of the sewage treatment plant during use, thereby effectively improving the energy utilization efficiency. The structure is simple and the use is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic front view structure diagram of a gentle breeze power generation device applied to a sewage treatment plant proposed by the present invention;

[0027] Figure 2 It is a schematic structure diagram of the cooperation between the first connecting pipe and the second connecting pipe of a gentle breeze power generation device applied to a sewage treatment plant proposed by the present invention;

[0028] Figure 3 The enlarged structural schematic diagram of part A in Figure 1 a breeze power generation device applied to a sewage treatment plant proposed by the present invention;

[0029] Figure 4 The enlarged structural schematic diagram of part B in Figure 1 a breeze power generation device applied to a sewage treatment plant proposed by the present invention;

[0030] Figure 5 The enlarged structural schematic diagram of part C in Figure 1 a breeze power generation device applied to a sewage treatment plant proposed by the present invention;

[0031] Figure 6 The structural schematic diagram of the sliding seat of a breeze power generation device applied to a sewage treatment plant proposed by the present invention;

[0032] Figure 7 The structural schematic diagram of the cooperation between the dust-proof net and the brush of a breeze power generation device applied to a sewage treatment plant proposed by the present invention;

[0033] Figure 8 The structural schematic diagram of the cooperation between the connecting plate and the vertical rod of a breeze power generation device applied to a sewage treatment plant proposed by the present invention.

[0034] Reference numerals: 1, mounting circular plate; 2, fixed cylinder; 3, second chute; 4, sliding seat; 5, transmission rod; 6, blade; 7, storage battery; 8, first chute; 9, movable rod; 10, arc-shaped clamping plate; 11, bidirectional lead screw; 12, hand wheel; 13, dust-proof net; 14, first through groove; 15, generator; 16, large gear; 17, small gear; 18, fixed rod; 19, second through groove; 20, second motor; 21, transmission shaft; 22, brush plate; 23, cam; 24, sliding rod; 25, fixed block; 26, return spring; 27, third through groove; 28, first motor; 29, first bevel gear; 30, second bevel gear; 31, threaded rod; 32, oil barrel; 33, first connecting pipe; 34, second connecting pipe; 35, slider; 36, connecting plate; 37, guide rod; 38, first oil outlet hole; 39, second oil outlet hole; 40, ventilation hole. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0036] Embodiment 1

[0037] Referring to Figures 1 - 8 , a breeze power generation device applied to a sewage treatment plant includes:

[0038] Install the circular plate 1;

[0039] Fixing cylinder 2, the fixing cylinder 2 is fixedly installed on one side of the installation circular plate 1, a ventilation hole 40 is opened on the installation circular plate 1, and a storage battery 7 is fixedly installed at the bottom of the fixing cylinder 2;

[0040] The first sliding groove 8, there are two first sliding grooves 8, the two first sliding grooves 8 are opened on one side of the installation circular plate 1, and a positioning mechanism is arranged in the two first sliding grooves 8, and the positioning mechanism is used for fixedly installing the installation circular plate 1;

[0041] The second sliding groove 3, the second sliding groove 3 is opened on the top of the fixing cylinder 2, a sliding seat 4 is slidably installed in the second sliding groove 3, a first through groove 14 is opened in the sliding seat 4, a transmission rod 5 is rotatably installed at the bottom of the sliding seat 4, and a plurality of blades 6 are fixedly installed on the outer side of the transmission rod 5. A lubricating mechanism is arranged in the first through groove 14, and the lubricating mechanism is used for adding lubricating oil to the transmission rod 5;

[0042] Fixing rod 18, the fixing rod 18 is fixedly installed in the fixing cylinder 2, a second through groove 19 is opened on the fixing rod 18, and a dustproof net 13 is fixedly installed in the fixing cylinder 2.

[0043] Refer to Figures 2 - 5, a generator 15 is fixedly installed on the top of the sliding seat 4. The output shaft of the generator 15 is fixedly connected to a small gear 17. The small gear 17 meshes with a large gear 16. The large gear 16 is fixedly connected to one end of a transmission rod 5. When the transmission rod 5 rotates, the large gear 16 drives the small gear 17 to rotate. A first through hole is formed in one inner wall of the third through groove 27. A threaded rod 31 is rotatably installed in the first through hole. The threaded rod 31 is threadedly connected to the sliding seat 4. One end of the threaded rod 31 is fixedly connected to a second bevel gear 30. When the second bevel gear 30 rotates, the threaded rod 31 drives the sliding seat 4 to move horizontally. The lubrication mechanism includes an oil barrel 32. The oil barrel 32 is fixedly installed on the top of the sliding seat 4. A first connecting pipe 33 is slidably installed on the top of the oil barrel 32. The oil barrel 32 and the sliding seat 4 are fixedly installed with the same second connecting pipe 34. One end of the second connecting pipe 34 is located in the first through groove 14. A vertical rod is fixedly installed on the top of the fixed cylinder 2. A connecting plate 36 is slidably installed on the vertical rod. A third sliding groove is formed in the bottom of the connecting plate 36. A slider 35 is slidably installed in the third sliding groove. A guide rod 37 is slidably installed on the slider 35. The two ends of the guide rod 37 are respectively fixedly connected to the two inner walls of the third sliding groove. One end of the first connecting pipe 33 is fixedly connected to the slider 35. When the slider 35 moves horizontally, the guide rod 37 can play a role in stabilizing the horizontal movement of the slider 35. A sliding rod 24 is slidably installed on the fixed cylinder 2. A cam 23 is fixedly installed on the outer side of the transmission shaft 21. The cam 23 cooperates with the sliding rod 24. One end of the sliding rod 24 is fixedly connected to the bottom of the connecting plate 36. A fixed block 25 is fixedly installed on the outer side of the sliding rod 24. A return spring 26 is sleeved on the outer side of the sliding rod 24. The two ends of the return spring 26 are respectively fixedly connected to the outer side of the fixed block 25 and the outer side of the fixed cylinder 2. When the cam 23 rotates, the cam 23 drives the sliding rod 24 to move vertically. The first connecting pipe 33 is slidably installed in the second connecting pipe 34. A first oil outlet hole 38 and a second oil outlet hole 39 are respectively formed on the first connecting pipe 33 and the second connecting pipe 34. The first oil outlet hole 38 and the second oil outlet hole 39 cooperate with each other. A second motor 20 is fixedly installed on one inner wall of the second through groove 19. A second through hole is formed in one inner wall of the second through groove 19. A transmission shaft 21 is rotatably installed in the second through hole. One end of the transmission shaft 21 is fixedly connected to the output shaft of the second motor 20. The other end of the transmission shaft 21 is fixedly connected to a brush plate 22. The brush plate 22 cooperates with the dust-proof net 13. When the second motor 20 is turned on, the transmission shaft 21 drives the brush plate 22 to rotate. A third through groove 27 is formed in the fixed cylinder 2. A first motor 28 is fixedly installed on the top of the fixed cylinder 2. The output shaft of the first motor 28 is fixedly installed with a first bevel gear 29. The first bevel gear 29 meshes with a second bevel gear 30. When the first motor 28 is turned on, the first bevel gear 29 drives the second bevel gear 30 to rotate. The positioning mechanism includes two movable rods 9. The two movable rods 9 are respectively slidably installed in the two first sliding grooves 8. Arc-shaped clamping plates 10 are fixedly installed on the outer sides of the two movable rods 9. A bidirectional lead screw 11 is rotatably installed on the mounting circular plate 1.The bidirectional lead screw 11 is threadedly connected to the two arc-shaped clamping plates 10. One end of the bidirectional lead screw 11 is fixedly connected to a handwheel 12. When the handwheel 12 is rotated, the bidirectional lead screw 11 drives the two movable rods 9 to move vertically.,

[0044] The implementation principle in this embodiment is as follows: During use, the mounting circular plate 1 is installed at the ventilation duct and the tail gas discharge port of the sewage treatment plant. The handwheel 12 is rotated, and the handwheel 12 drives the bidirectional lead screw 11 to rotate. The bidirectional lead screw 11 drives the two movable rods 9 to approach each other. The two movable rods 9 respectively drive the two arc-shaped clamping plates 10 to approach each other. Further, the two arc-shaped clamping plates 10 can clamp the ventilation duct or the tail gas discharge port, thereby fixedly installing the mounting circular plate 1. When the ventilation duct or the tail gas discharge port is ventilated or discharging, air passes through the ventilation holes 40 and the fixed cylinder 2, thereby driving the plurality of blades 6 to rotate. The plurality of blades 6 drive the transmission rod 5 to rotate. The transmission rod 5 drives the large gear 16 to rotate. The large gear 16 drives the small gear 17 to rotate. The small gear 17 drives the generator 15 to operate, thereby achieving the purpose of capturing wind energy and converting it into electrical energy. The converted electrical energy is stored in the storage battery 7. When the ventilation duct and the tail gas discharge port are in a closed state, by turning on the first motor 28, the first motor 28 drives the first bevel gear 29 to rotate. The first bevel gear 29 drives the second bevel gear 30 to rotate. The second bevel gear 30 drives the threaded rod 31 to rotate. The threaded rod 31 drives the slide seat 4 to move horizontally, thereby moving the plurality of blades 6 outside the fixed cylinder 2, and further being able to continue capturing wind energy and converting it into electrical energy. During use, by turning on the second motor 20, the second motor 20 drives the transmission shaft 21 to rotate. The transmission shaft 21 drives the brush plate 22 to rotate. The brush plate 22 can clean the dust-proof net 13, avoiding the dust-proof net 13 intercepting too many impurities and affecting ventilation. At the same time, the transmission shaft 21 drives the cam 23 to rotate. The cam 23 drives the slide rod 24 to move vertically upward. The slide rod 24 drives the fixed block 25 to move vertically upward. The fixed block 25 stretches the return spring 26. When the cam 23 rotates to a certain position, the return spring 26 can drive the fixed block 25 to reset through the deformation force. Further, the slide rod 24 drives the connecting plate 36 to move vertically in a reciprocating manner. The connecting plate 36 drives the slider 35 and the first connecting pipe 33 to move vertically in a reciprocating manner. When the first connecting pipe 33 moves to a certain position, the first oil outlet hole 38 and the second oil outlet hole 39 coincide. Further, the lubricating oil in the oil barrel 32 is discharged onto the transmission rod 5 through the first oil outlet hole 38, the second oil outlet hole 39, and the second connecting pipe 34, thereby being able to lubricate the transmission rod 5 and ensuring its transmission efficiency.

[0045] Embodiment Two

[0046] The difference between this embodiment and the first embodiment is that a timer and a controller are fixedly installed on the outer side of the fixed cylinder 2, the timer, the controller and the second motor 20 are connected in sequence, the timer is used to set the cleaning and lubrication time, and when the set time is reached, the controller controls the second motor 20 to automatically open and close, so as to be able to perform automatic cleaning and lubrication.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered within the protection scope of the present invention.

Claims

1. A breeze power generation device applied to a sewage treatment plant, characterized in that: Including: Mounting circular plate (1); Fixed cylinder (2), which is fixedly installed on one side of the mounting circular plate (1). Ventilation holes (40) are provided on the mounting circular plate (1), and a storage battery (7) is fixedly installed at the bottom of the fixed cylinder (2); First sliding grooves (8), there are two first sliding grooves (8), which are opened on one side of the mounting circular plate (1). A positioning mechanism is arranged in the two first sliding grooves (8), and the positioning mechanism is used for fixedly installing the mounting circular plate (1); Second sliding groove (3), which is opened at the top of the fixed cylinder (2). A sliding seat (4) is slidably installed in the second sliding groove (3). A first through groove (14) is opened in the sliding seat (4). A transmission rod (5) is rotatably installed at the bottom of the sliding seat (4). A plurality of blades (6) are fixedly installed on the outer side of the transmission rod (5). A lubrication mechanism is arranged in the first through groove (14), and the lubrication mechanism is used for adding lubricating oil to the transmission rod (5); Fixed rod (18), which is fixedly installed in the fixed cylinder (2). A second through groove (19) is opened on the fixed rod (18), and a dust-proof net (13) is fixedly installed in the fixed cylinder (2).

2. The breeze power generation device applied to a sewage treatment plant according to claim 1, wherein: The positioning mechanism includes two movable rods (9), which are respectively slidably installed in the two first sliding grooves (8). Arc-shaped clamping plates (10) are fixedly installed on the outer sides of the two movable rods (9). A bidirectional lead screw (11) is rotatably installed on the mounting circular plate (1). The bidirectional lead screw (11) is threadedly connected to the two arc-shaped clamping plates (10). One end of the bidirectional lead screw (11) is fixedly connected to a hand wheel (12).

3. The breeze power generation device applied to a sewage treatment plant according to claim 2, characterized in that: A generator (15) is fixedly installed at the top of the sliding seat (4). The output shaft of the generator (15) is fixedly connected to a small gear (17). The small gear (17) meshes with a large gear (16). The large gear (16) is fixedly connected to one end of the transmission rod (5).

4. A breeze power generation device applied to a sewage treatment plant according to claim 3, characterized in that: A third through groove (27) is opened on the fixed cylinder (2). A first motor (28) is fixedly installed at the top of the fixed cylinder (2). The output shaft of the first motor (28) is fixedly installed with a first bevel gear (29). The first bevel gear (29) meshes with a second bevel gear (30).

5. The breeze power generation device applied to a sewage treatment plant according to claim 4, wherein: One inner wall of one side of the third through groove (27) is provided with a first through hole. A threaded rod (31) is rotatably installed in the first through hole. The threaded rod (31) is threadedly connected to the sliding seat (4). One end of the threaded rod (31) is fixedly connected to the second bevel gear (30).

6. The breeze power generation device applied to a sewage treatment plant according to claim 5, characterized in that: One inner wall of one side of the second through groove (19) is fixedly installed with a second motor (20). One inner wall of one side of the second through groove (19) is provided with a second through hole. A transmission shaft (21) is rotatably installed in the second through hole. One end of the transmission shaft (21) is fixedly connected to the output shaft of the second motor (20). The other end of the transmission shaft (21) is fixedly connected to a brush plate (22). The brush plate (22) cooperates with the dust-proof net (13).

7. The breeze power generation device applied to a sewage treatment plant according to claim 6, characterized in that: The lubrication mechanism includes an oil barrel (32). The oil barrel (32) is fixedly installed at the top of the sliding seat (4). A first connecting pipe (33) is slidably installed at the top of the oil barrel (32). The oil barrel (32) and the sliding seat (4) are fixedly installed with the same second connecting pipe (34). One end of the second connecting pipe (34) is located in the first through groove (14).

8. The breeze power generation device applied to a sewage treatment plant according to claim 7, characterized in that: The first connecting pipe (33) is slidably installed in the second connecting pipe (34). A first oil outlet hole (38) and a second oil outlet hole (39) are respectively formed in the first connecting pipe (33) and the second connecting pipe (34). The first oil outlet hole (38) and the second oil outlet hole (39) are matched with each other.

9. The breeze power generation device applied to a sewage treatment plant according to claim 8, characterized in that: A vertical rod is fixedly installed at the top of the fixed cylinder (2). A connecting plate (36) is slidably installed on the vertical rod. A third sliding groove is formed at the bottom of the connecting plate (36). A slider (35) is slidably installed in the third sliding groove. A guide rod (37) is slidably installed on the slider (35). Two ends of the guide rod (37) are respectively fixedly connected with two inner walls of two sides of the third sliding groove. One end of the first connecting pipe (33) is fixedly connected with the slider (35).

10. The breeze power generation device applied to a sewage treatment plant according to claim 9, characterized in that: A sliding rod (24) is slidably installed on the fixed cylinder (2). A cam (23) is fixedly installed on the outer side of the transmission shaft (21). The cam (23) is matched with the sliding rod (24). One end of the sliding rod (24) is fixedly connected with the bottom of the connecting plate (36). A fixed block (25) is fixedly installed on the outer side of the sliding rod (24). A return spring (26) is sleeved on the outer side of the sliding rod (24). Two ends of the return spring (26) are respectively fixedly connected with the outer side of the fixed block (25) and the outer side of the fixed cylinder (2).

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